WEC 43 takes place Sept. 2 at the Covelli Centre in Youngstown, Ohio, and airs on Versus.

With current title-holder Jamie Varner sidelined by injuries, WEC 43’s main event features a bout between Donald Cerrone and Benson Henderson for an interim title.

MMAjunkie.com reported last week that Assuncao and WEC newcomer Jabouin had verbally agreed to a contest. Now signed, the bout pits Assuncao, a submission ace who picked up his fifth straight victory with a unanimous-decision win over Jameel Massouh at WEC 40, against the Canadian Jabouin, who owns a four-fight win streak and with 13 victories in his past 15 contests.

Also reported last week was the featherweight bout between Fabiano and Koch. Now signed, the fight pits Fabiano, the final featherweight champion of the now-defunct International Fight League who topped fellow contender Fredson Paixao via unanimous decision at WEC 40, against Koch, who owns seven stoppages (six submissions) in eight career wins, the most recent for the prospect-rich Midwest Cage Championship organization.